ID A0A3N2AVW9_9MICO Unreviewed; 331 AA.
AC A0A3N2AVW9;
DT 13-FEB-2019, integrated into UniProtKB/TrEMBL.
DT 13-FEB-2019, sequence version 1.
DT 27-MAR-2024, entry version 17.
DE RecName: Full=Beta-ketoacyl-[acyl-carrier-protein] synthase III {ECO:0000256|HAMAP-Rule:MF_01815};
DE Short=Beta-ketoacyl-ACP synthase III {ECO:0000256|HAMAP-Rule:MF_01815};
DE Short=KAS III {ECO:0000256|HAMAP-Rule:MF_01815};
DE EC=2.3.1.180 {ECO:0000256|HAMAP-Rule:MF_01815};
DE AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase 3 {ECO:0000256|HAMAP-Rule:MF_01815};
DE AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase III {ECO:0000256|HAMAP-Rule:MF_01815};
GN Name=fabH {ECO:0000256|HAMAP-Rule:MF_01815};
GN ORFNames=EDD26_2582 {ECO:0000313|EMBL:ROR67176.1};
OS Agrococcus jenensis.
OC Bacteria; Actinomycetota; Actinomycetes; Micrococcales; Microbacteriaceae;
OC Agrococcus.
OX NCBI_TaxID=46353 {ECO:0000313|EMBL:ROR67176.1, ECO:0000313|Proteomes:UP000275456};
RN [1] {ECO:0000313|EMBL:ROR67176.1, ECO:0000313|Proteomes:UP000275456}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 9580 {ECO:0000313|EMBL:ROR67176.1,
RC ECO:0000313|Proteomes:UP000275456};
RA Klenk H.-P.;
RT "Sequencing the genomes of 1000 actinobacteria strains.";
RL Submitted (NOV-2018) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the condensation reaction of fatty acid synthesis
CC by the addition to an acyl acceptor of two carbons from malonyl-ACP.
CC Catalyzes the first condensation reaction which initiates fatty acid
CC synthesis and may therefore play a role in governing the total rate of
CC fatty acid production. Possesses both acetoacetyl-ACP synthase and
CC acetyl transacylase activities. Its substrate specificity determines
CC the biosynthesis of branched-chain and/or straight-chain of fatty
CC acids. {ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=acetyl-CoA + H(+) + malonyl-[ACP] = 3-oxobutanoyl-[ACP] + CO2
CC + CoA; Xref=Rhea:RHEA:12080, Rhea:RHEA-COMP:9623, Rhea:RHEA-
CC COMP:9625, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57287,
CC ChEBI:CHEBI:57288, ChEBI:CHEBI:78449, ChEBI:CHEBI:78450;
CC EC=2.3.1.180; Evidence={ECO:0000256|HAMAP-Rule:MF_01815};
CC -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis. {ECO:0000256|HAMAP-
CC Rule:MF_01815}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- DOMAIN: The last Arg residue of the ACP-binding site is essential for
CC the weak association between ACP/AcpP and FabH. {ECO:0000256|HAMAP-
CC Rule:MF_01815}.
CC -!- SIMILARITY: Belongs to the thiolase-like superfamily. FabH family.
CC {ECO:0000256|ARBA:ARBA00008642, ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ROR67176.1}.
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DR EMBL; RKHJ01000001; ROR67176.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3N2AVW9; -.
DR OrthoDB; 9815506at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000275456; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004315; F:3-oxoacyl-[acyl-carrier-protein] synthase activity; IEA:InterPro.
DR GO; GO:0033818; F:beta-ketoacyl-acyl-carrier-protein synthase III activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006633; P:fatty acid biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd00830; KAS_III; 1.
DR Gene3D; 3.40.47.10; -; 2.
DR HAMAP; MF_01815; FabH; 1.
DR InterPro; IPR013747; ACP_syn_III_C.
DR InterPro; IPR013751; ACP_syn_III_N.
DR InterPro; IPR004655; FabH.
DR InterPro; IPR016039; Thiolase-like.
DR NCBIfam; TIGR00747; fabH; 1.
DR PANTHER; PTHR34069; 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE 3; 1.
DR PANTHER; PTHR34069:SF2; BETA-KETOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE III; 1.
DR Pfam; PF08545; ACP_syn_III; 1.
DR Pfam; PF08541; ACP_syn_III_C; 1.
DR SUPFAM; SSF53901; Thiolase-like; 1.
PE 3: Inferred from homology;
KW Acyltransferase {ECO:0000256|HAMAP-Rule:MF_01815};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01815};
KW Fatty acid biosynthesis {ECO:0000256|ARBA:ARBA00023160, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Fatty acid metabolism {ECO:0000256|ARBA:ARBA00022832, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Lipid biosynthesis {ECO:0000256|ARBA:ARBA00022516, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Lipid metabolism {ECO:0000256|ARBA:ARBA00023098, ECO:0000256|HAMAP-
KW Rule:MF_01815}; Multifunctional enzyme {ECO:0000256|HAMAP-Rule:MF_01815};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01815}.
FT DOMAIN 116..193
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08545"
FT DOMAIN 240..328
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III C-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08541"
FT REGION 257..261
FT /note="ACP-binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 122
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 256
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 287
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
SQ SEQUENCE 331 AA; 34753 MW; 67FDF51AC35F1150 CRC64;
MTRMTSLPTR AGARILAVGA ARGDLVVPNE DLIGPIDSSD EWIRQRTGII SRVRASEGIE
AVDLAETASR EALERAGLDA SRIDAVVVST ISNTVQTPSM AALLTERLGA TPAPAFDISA
ACAGYAYGVA QADALVRSGM AEHVLVVGVE KLSEIVDPTD RSISFLLGDG AGAVVIGPSH
EPGISPSVWG SDGSQWDTIR MTNPLGSMRE GAAWPTLRQD GQKVFRWAVW EMAKKAREAL
DAAGVEPGDL AAFIPHQANM RIIDEFAKQL QLPDSVAIAR DIATTGNTSA ASIPLAMHRL
LEEQPELSGG LALQIGFGAG LVYGAQVVVL P
//
